US5182437A - Flame-type heater plug for an air-compression fuel-injection internal-combustion engine - Google Patents

Flame-type heater plug for an air-compression fuel-injection internal-combustion engine Download PDF

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Publication number
US5182437A
US5182437A US07/658,676 US65867691A US5182437A US 5182437 A US5182437 A US 5182437A US 65867691 A US65867691 A US 65867691A US 5182437 A US5182437 A US 5182437A
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US
United States
Prior art keywords
flame
tube
heating bar
type heater
plug housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/658,676
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English (en)
Inventor
Friedrich Schmid
Peter Joppig
Roland Klak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler AG
Original Assignee
Mercedes Benz AG
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Filing date
Publication date
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Assigned to MERCEDES-BENZ AG, FEDERAL REPUBLIC OF GERMANY reassignment MERCEDES-BENZ AG, FEDERAL REPUBLIC OF GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KLAK, ROLAND, JOPPIG, PETER, SCHMID, FRIEDRICH
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Publication of US5182437A publication Critical patent/US5182437A/en
Assigned to DAIMLER-BENZ AKTIENGESELLSCHAFT reassignment DAIMLER-BENZ AKTIENGESELLSCHAFT MERGER RE-RECORD TO CORRECT THE NUMBER OF MICROFILM PAGES FROM 60 TO 98 AT REEL 9360, FRAME 0937. Assignors: MERCEDES-BENZ AG
Assigned to DAIMLER-BENZ AKTIENGESELLSCHAFT reassignment DAIMLER-BENZ AKTIENGESELLSCHAFT MERGER (SEE DOCUMENT FOR DETAILS). Assignors: MERCEDES-BENZ AG
Assigned to DAIMLERCHRYSLER AG reassignment DAIMLERCHRYSLER AG MERGER (SEE DOCUMENT FOR DETAILS). Assignors: DAIMLER-BENZ AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines

Definitions

  • the invention relates to a flame-type heater plug for an air-compression fuel-injection internal-combustion engine.
  • FIG. 8 Known flame-type heater plugs (FIG. 8) used as a starting aid during the starting operation consist essentially of a plug housing with a flame tube, a proportioning insert, a heating bar and an evaporator tube surrounding the heating bar.
  • the fuel supplied via the proportioning insert passes into an annular interspace between the heating bar and evaporator tube and from there flows into the flame tube where it mixes with the inflowing air.
  • An object on which the invention is based is, by means of simple constructional variations on the flametype heater plug referred to above, to prepare the fuel in such a way that it experiences the best possible evaporation and forms an ignitable mixture with the air penetrating into the flame tube.
  • the present invention achieves this object by providing an arrangement wherein a fuel connection includes a helical swirl channel opening into the annular interspace and located between the plug housing and the heating bar.
  • the special fuel connection between the proportioning insert and the evaporator tube ensures a substantially better evaporation of the fuel in the narrow helical swirl channel, from which the fuel emerges swirling and, accelerated by the annular interspace, enters the flame tube and there mixes with the inflowing air to form the best possible fuel/air mixture
  • FIG. 1 is a schematic part sectional view of a flame-type heater plug, constructed according to a preferred embodiment of the invention
  • FIG. 2 schematically shows an embodiment of the lower part of the flame-type heater plug with an annular air deflector in the cylindrically designed flame tube;
  • FIG. 3 shows another embodiment with a star-shaped flame tube with an air deflector
  • FIG. 4 shows the flame tube along the line IV--IV in FIG. 4;
  • FIG. 5 shows an embodiment of a flame tube with indentations for the additional air inflow
  • FIG. 6 shows another embodiment of the flame tube with a differently designed air deflector
  • FIG. 7 shows the flame tube of FIG. 6 rotated through 90°
  • FIG. 7A is schematic sectional view along line VII-A-VIIA of FIG. 7, and
  • FIG. 8 shows a known flame-type heater plug with an evaporator tube extending as far as the proportioning insert.
  • the flame-type heater plug 1 illustrated in FIG. 1 is designed for use in an internal-combustion engine with air compression and auto-ignition.
  • Heater plug 1 includes a plug housing 2 with a proportioning insert 3, a heating bar 4, and an evaporator tube 6 surrounding the latter to form an annular interspace 5.
  • the upper end of this evaporator tube 6 is arranged at a distance from the proportioning insert 3, the plug housing 2 being so drawn in in this region that it is connected sealingly to the heating bar 4.
  • the free end of the heating bar 4 projects from the evaporator tube 6 and is shielded by means of a cylindrically designed flame tube 8 which is connected to the plug housing 2 and which is equipped with passage orifices 9 for the inflowing air.
  • FIGS. 2 to 5 there is arranged between the flame tube, 8A, 8B, 8C and the heating bar 4, level with the passage orifices 9, an annular air deflector 10A, 10B, 10C which is retained by means of webs 11 (FIGS. 2 and 5) fastened to the flame tube 8, 8A, 8B, 8C below the passage orifices 9.
  • the air flowing into the interior of the flame-type heater plug 1 is thus deflected upwards and downwards.
  • FIGS. 3 and 4 illustrate an exemplary embodiment, in which the flame tube 8B is not of cylindrical, but of star-shaped design.
  • the air deflector 10B is connected firmly to the indentations 8a, while the projections 8b have the passage orifices 9.
  • the air inside the flame-type heater plug 1 experiences high turbulence, and outside this plug 1 an improvement of the fuel/air mixture is obtained.
  • the free end of the flame tube 8A is drawn arcuately inwards, in order there to deflect the inflowed air or the fuel/air mixture onto the hot heating bar 4, thereby further improving the mixture formation and achieving a higher combustion.
  • gills 12 are provided on the flame tube 8C above the passage orifices 9, Which gills guide the inflowing air between the flame tube 8C and evaporator tube 6 and finally between the air deflector 10C and the heating bar 4, in order to ventilate the interior there.
  • the air deflector 10C has a larger diameter than the evaporator tube 6.
  • the part of the heating bar 4 projecting from the evaporator tube 6 can be made grooved, specifically in the form of mutually superposed annular grooves 13 according to FIG. 6 or of a helical annular groove 14 according to FIGS. 2, 3, 5, thereby affording an enlargement of the surface of the heating bar 4 with the result of an improvement in ignition.
  • FIGS. 6 and 7 show air deflectors 10D which are respectively formed relative to the flame tube 8D by two mutually superposed circumferentially extending slits 10E, 10F limiting an indented wall portion 10G.
  • These air deflectors 10D are formed by wall portions which are pressed inwards out of the flame tube and the upper and lower limitations of which define the orifices.
  • the air deflectors can be arranged in one row or two rows.
  • FIG. 7A is schematic sectional view along line VII-A-VIIA of FIG. 7.
  • FIG. 8 illustrates a known flame-type heater plug in which the evaporator tube 6 is drawn up as far as the proportioning insert 3.
  • the fuel coming from the proportioning insert flows between the heating bar 4 and evaporator tube 6 into the flame tube 8.
  • the fuel is in contact with the hot heating bar over only a small part. Soot accumulates, becomes coked with increasing thickness and at worst leads to the failure of the flame-type heater plug.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Air-Conditioning For Vehicles (AREA)
US07/658,676 1990-03-29 1991-02-21 Flame-type heater plug for an air-compression fuel-injection internal-combustion engine Expired - Fee Related US5182437A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010093A DE4010093C1 (en) 1990-03-29 1990-03-29 Flame plug for IC-engine - has fuel metering insert and spaced evaporator tube to enclose heating bar
DE4010093 1990-03-29

Publications (1)

Publication Number Publication Date
US5182437A true US5182437A (en) 1993-01-26

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Family Applications (1)

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US07/658,676 Expired - Fee Related US5182437A (en) 1990-03-29 1991-02-21 Flame-type heater plug for an air-compression fuel-injection internal-combustion engine

Country Status (4)

Country Link
US (1) US5182437A (fr)
EP (1) EP0448830B1 (fr)
DE (1) DE4010093C1 (fr)
RU (1) RU1838663C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5402757A (en) * 1992-12-23 1995-04-04 Beru Ruprecht Gmbh & Co. Kg Flame glow unit
US5664547A (en) * 1995-02-25 1997-09-09 Mercedes Benz Ag Flame glow plug for a diesel engine
US5860804A (en) * 1997-10-30 1999-01-19 Societe En Commandite Gaz Metropolitain Baffle ignitor assembly
US5937814A (en) * 1996-07-24 1999-08-17 Beru Ruprecht Gmbh & Co. Kg Flame starting device for an internal combustion engine and process for operating the flame starting unit
US6076493A (en) * 1998-10-26 2000-06-20 Caterpillar Inc. Glow plug shield with thermal barrier coating and ignition catalyst
US20090302022A1 (en) * 2008-06-10 2009-12-10 Wilcox Ernest W Ignitor Plug Assembly
WO2010148457A1 (fr) * 2009-06-26 2010-12-29 Orbital Australia Pty Limited Combustion de carburants à faible pression de vapeur dans des moteurs à allumage par étincelle
US20110129393A1 (en) * 2009-12-02 2011-06-02 Lecea Oscar A Electrically-Heated Contact Fuel Vaporizer for a Hydrocarbon Reformer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142195C2 (de) * 1991-12-20 1993-10-14 Daimler Benz Ag Flammglühkerze für eine Dieselbrennkraftmaschine
DE4308543A1 (de) * 1993-03-17 1994-09-22 Man Nutzfahrzeuge Ag Flammstartanlage für Dieselmotore
DE102010027468A1 (de) * 2010-07-17 2012-01-19 Borgwarner Beru Systems Gmbh Glühkerze

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957954A1 (de) * 1968-11-19 1970-06-04 Ise Electronics Corp Elektrische Anzeigeroehre und Verfahren zur Herstellung derselben
DE1903999A1 (de) * 1969-01-28 1970-08-20 Bosch Gmbh Robert Flammgluehkerze als Anlasshilfe fuer Diesel-und Vielstoffmotoren
US3689195A (en) * 1970-06-26 1972-09-05 Bosch Gmbh Robert Glow plug
DE7133650U (de) * 1973-02-15 Bosch R Gmbh Flammgluhstiftkerze fur Diesel und Vielstoff Motoren
US3718425A (en) * 1971-03-17 1973-02-27 Bosch Gmbh Robert Glow plug construction
GB1329533A (en) * 1971-04-20 1973-09-12 Nippon Denso Co Flame glow plugs serving as starting aids for diesel engines
US4459948A (en) * 1980-10-30 1984-07-17 Beru-Werk Albert Ruprecht Gmbh & Co., K.G. Glow plug for internal combustion engines
DE3301559A1 (de) * 1983-01-19 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Stabgluehkerze fuer eine luftverdichtende einspritzbrennkraftmaschine
DE3309133A1 (de) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Flammgluehstiftkerze zum vorwaermen der ansaugluft von brennkraftmaschinen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1577731A (fr) * 1967-10-18 1969-08-08
DE2201441A1 (de) * 1972-01-13 1973-07-19 Bosch Gmbh Robert Flammgluehkerze als anlasshilfe fuer diesel- und vielstoff-motoren

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7133650U (de) * 1973-02-15 Bosch R Gmbh Flammgluhstiftkerze fur Diesel und Vielstoff Motoren
DE1957954A1 (de) * 1968-11-19 1970-06-04 Ise Electronics Corp Elektrische Anzeigeroehre und Verfahren zur Herstellung derselben
DE1903999A1 (de) * 1969-01-28 1970-08-20 Bosch Gmbh Robert Flammgluehkerze als Anlasshilfe fuer Diesel-und Vielstoffmotoren
US3630184A (en) * 1969-01-28 1971-12-28 Bosch Gmbh Robert Glow plug
US3689195A (en) * 1970-06-26 1972-09-05 Bosch Gmbh Robert Glow plug
US3718425A (en) * 1971-03-17 1973-02-27 Bosch Gmbh Robert Glow plug construction
GB1329533A (en) * 1971-04-20 1973-09-12 Nippon Denso Co Flame glow plugs serving as starting aids for diesel engines
US4459948A (en) * 1980-10-30 1984-07-17 Beru-Werk Albert Ruprecht Gmbh & Co., K.G. Glow plug for internal combustion engines
DE3301559A1 (de) * 1983-01-19 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Stabgluehkerze fuer eine luftverdichtende einspritzbrennkraftmaschine
DE3309133A1 (de) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Flammgluehstiftkerze zum vorwaermen der ansaugluft von brennkraftmaschinen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5402757A (en) * 1992-12-23 1995-04-04 Beru Ruprecht Gmbh & Co. Kg Flame glow unit
US5664547A (en) * 1995-02-25 1997-09-09 Mercedes Benz Ag Flame glow plug for a diesel engine
US5937814A (en) * 1996-07-24 1999-08-17 Beru Ruprecht Gmbh & Co. Kg Flame starting device for an internal combustion engine and process for operating the flame starting unit
US5860804A (en) * 1997-10-30 1999-01-19 Societe En Commandite Gaz Metropolitain Baffle ignitor assembly
US6076493A (en) * 1998-10-26 2000-06-20 Caterpillar Inc. Glow plug shield with thermal barrier coating and ignition catalyst
US20090302022A1 (en) * 2008-06-10 2009-12-10 Wilcox Ernest W Ignitor Plug Assembly
US8022337B2 (en) 2008-06-10 2011-09-20 Locust, Usa, Inc. Ignitor plug assembly
WO2010148457A1 (fr) * 2009-06-26 2010-12-29 Orbital Australia Pty Limited Combustion de carburants à faible pression de vapeur dans des moteurs à allumage par étincelle
US20110129393A1 (en) * 2009-12-02 2011-06-02 Lecea Oscar A Electrically-Heated Contact Fuel Vaporizer for a Hydrocarbon Reformer

Also Published As

Publication number Publication date
DE4010093C1 (en) 1991-08-14
EP0448830A3 (en) 1992-01-22
EP0448830B1 (fr) 1994-03-02
RU1838663C (ru) 1993-08-30
EP0448830A2 (fr) 1991-10-02

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Owner name: MERCEDES-BENZ AG, FEDERAL REPUBLIC OF GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SCHMID, FRIEDRICH;JOPPIG, PETER;KLAK, ROLAND;REEL/FRAME:005611/0814;SIGNING DATES FROM 19910207 TO 19910214

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Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, GERMANY

Free format text: MERGER RE-RECORD TO CORRECT THE NUMBER OF MICROFILM PAGES FROM 60 TO 98 AT REEL 9360, FRAME 0937.;ASSIGNOR:MERCEDES-BENZ AG;REEL/FRAME:009827/0145

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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362